Per NCERT §5.8 (smooth inclined plane), an object released from rest at height h on a frictionless incline reaches the bottom with which speed?
AZero (no friction)
Bg h (depends on time)
C√(2 g h) (independent of incline angle)
D√(2 g h sin θ) (depends on angle)
Answer & Solution
Correct answer: C. √(2 g h) (independent of incline angle)
NCERT §5.8: only mg does work; v² = 2gh regardless of incline angle. Same as free fall in terms of speed.
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